Brake Fluid Pressure Sensor/Switch: Service and Repair

Replacing EBD pressure switch

Preparations




Clean around EBD pressure sensor connection to master cylinder.
Put rags under the EBD pressure sensor to protect painted surfaces against brake fluid spillage.
Get a drain bottle and hose to collect brake fluid in.

Removing EBD pressure sensor




Ignition off.
Jack front end of car up.
- Disconnect connector from EBD pressure sensor.

Remove:
- Protective cap from bleed nipple by LH front wheel.
- Connect hose to drain bottle.
- Open bleed nipple, depress brake pedal and hold it down or lock it in that position.
- Close bleed nipple.
- Remove EBD pressure sensor and plug connector so that no dirt enters the braking system.

Check EBD pressure sensor




The EBD pressure sensor comes with different seals between it and the master cylinder:
- O-ring
- Captive washer
- Conical seal
- Check that there is no dirt in the EBD pressure sensor connector.

Installing new EBD pressure sensor
- Install EBD pressure sensor.Tighten to 15 Nm (10.3 ft.lb).
- Connect connector to EBD pressure sensor.
Release brake pedal.
Top up with new brake fluid in the reservoir if required and bleed as necessary (See.
The EBD pressure sensor is located in the primary circuit, so only the primary circuit needs bleeding.

Finishing
- Connect connector to brake fluid level sensor.
- Check that there are no leaks.
Clean up any brake fluid spillage with lukewarm water and car-wash shampoo.